import java.util.Scanner;

/*
    @author:sa
    @date:2024/11/7 11:10
*/
public class ifDemo01 {
    public static void main(String[] args) {
        System.out.println("今天是周几");
        Scanner scanner = new Scanner(System.in);
        String str1 = scanner.nextLine();
        int s1 = Integer.parseInt(str1);
        if (s1 == 1) {
            System.out.println("今天是周一");
        }
        if (s1 == 2) {
            System.out.println("今天是周二");
        }
        if (s1 == 3) {
            System.out.println("今天是周三");
        }
        if (s1 == 4) {
            System.out.println("今天是周四");
        }
        if (s1 == 5) {
            System.out.println("今天是周五");
        }
        if (s1 == 6) {
            System.out.println("今天是周六");
        }
        if (s1 == 7) {
            System.out.println("今天是周日");
        }
    }
}